In the 14-boys division, Bernardine Siso thrashed Fritz Satera, 6-1, 6-0 while his younger sister Sally Mae blanked Joan Abarquez, 6-0, 6-0, in the distaff side.
Sally Dine, on the other hand, showed her might by thumping down Rosa Maria Gelbolingo, 6-2 6-0, in the 16-girls category.
On the other hand, Jacob Lagman earned tickets for the semis after upsetting John Arnel Go, 6-3, 7-5 in the lower bracket of the 14-boys class.
Jessica Lagman also grabbed two tickets for the semis after she won by default over Kimberly Uytico in the 14-girls and Mary Charmaine Cabigon, 6-7, 6-4, 11-9, in the 16-girls.
Still in the 14-boys category, Gideon Ramoneda survived John Miochael Necesario, 2-6, 6-3, 10-6 while Joseph Tallo crushed Junel Espinosa, 6-3, 6-3.
Also, John Francis Largo defeated Cyril Camporedondo, 7-5, 6-2, in the 18-boys, for a berth to the semi-final round.
In the 12-girls, it was a bad day for the Dasian sisters as they failed to enter in the semis.
Khylle Longakit demolished Elgy Dasian, 6-4, 6-4, while Elma Dasian was kicked off by Kimberly Uytico, 6-3, 6-1.
In the 14-girls class, Cheska Tabo-tabo won over Greendhel Secong, 6-0, 6-2 while Kara Lei Abadia won by default over Bianca Cinabre.
Lovely Soquiño defeated Sheena Pavo, 6-0, 6-1, in the 18-girls division.